The 2003 Family Circle Cup was a women's tennis tournament and the 31st edition of the Family Circle Cup.

This WTA Tier I Event was held at the Family Circle Tennis Center in Charleston, South Carolina, United States and played on outdoor clay courts.

Second-seeded Justine Henin-Hardenne won the singles title.

Justine Henin-Hardenne defeated Serena Williams 6–3, 6–4 Virginia Ruano Pascual / Paola Suárez defeated Janette Husárová / Conchita Martínez 6–0, 6–3